Driving mechanism for auxiliary seats for chairs



G. A. BONELLI.

DRIVING MECHANISM FOR AUXILIARY SEATS FOR CHAIRS.

' APPLICATION FILED SEPT.20. 19w.

1,359,786. Patented Nov. 23,1920.

All m M lfi'zemfar 'eoz ye A..Bonelli WWW MWMQ his Affarney adaptable to barber chairs.

* UNITED, STATES fN NT OQFHC I GEORGE LA. .BonnLnI, on-irINGivIA iI ARIZONA. L

DRIVING MECHANISM Fen AUXILIARY .sEArrs-ron CHAIRS. 7

To all whom it may concern Be it known that I, GEORGE A. BONELLI, a

citizen of the United States, residing at Kingman, in the county of Mohave and State of Arizona, have invented new and useful Improvements in Driving Mechanism for Auxiliary Seats for Chairs, of-wh-ich the following is a specification.

' This invention relates to a seat for an op erator adapted to be moved about a chair in which a subject may sit; It is especially The objects of this invention are first, to

provide a seat-attached to a chair which may be movedto' a position convenient for the operator towork upon the subject; second,

7 to provide a seat of the character described which has means for propelling it so that it isnot necessary for the operator to dismount from the seat'in order to move the same; and third, to provide a seat of the spending accomplishments ofmy invention from the following detailed description of *a-preferred embodiment thereof. For the purpose of this description, reference is had to the accompanying drawing,- in which:

Figure 1 is a side elevation of a chair and seat constructed in accordancewith my in- "vention; Fig. 2 isa fragmentary detail in section as seen on the line 2- 2 of Fig. 1, the

yokes being omitted for clearness ig. 3 is a section taken on the line ofFlg. 2,' part being shown in elevation an'dthe yokes being-omitted for clearness; Fig. 4 is a section taken on the line 4k-4 of Fig. 1; and Fig.

I 5 is a section taken on the line 5-5 of Fig. 1.

Referring more particularly to Fig. 1, A'

indicates a chair of the type in common use in barber shops. Attached thereto is the seat for the barber or operator indicated generally by B.

The chair is supportedupon a standard 6 which rests in a base 7; The chair may.

be revolved.

Journaled upon the base 7 are collars'8 and 9, which are attached to a carriage casing 10 in which is a driving wheel 11 resting upon the floor supporting the carriage,

Application fil ed September 20, 1919. Serial No; 325,145.

' Specification ofLett ers Patent. Patented NQ 23,. 1920,

struction the seat isv pivoted to the chair and may revolve around; it ina circle A standard 12 forthe -seat-proper extends from the top of'the carriage 10 and is bent at anangle. Mounted uponthe horizontal part of the 1 standard 12 is anadjustable-head 1st, whereby the seat maybe-movedto or from the chairandfsecured in position by any suitable means. 3

The collar 8 is attachedto. casing 10 by=*- arms 15 and 16. A similar;set of arms ex;

tend from collar 9 and are seciured at their ends to carr1age'cas ng'10, one of thefarms' beingindicated by 17 m Fig. 1. ;The arms ancl'used to propel the same. iByth-is conare suitably connected by braces forming a rigid'frame T p -Mounted in the frame is an electr c motor 18 having a shaft connected by auniversal joint 19to a shaft 20. yS'liaft 20 carries adjacent its-end'a friction wheel 21.

shaft is journaled in the casing upon a: pair of yokes 22 and '23 as'shownin Fig.4. The yokes have their openings crossing at right angles to one another, yoke 23 having a stem 24- guided in a bearing 25 soth'at it may slide thereinand a stem 26 slidingly guided in a bearing 27. Stem 26 is secured to a bell-crank 28, which is secured' at itsother end'to a link 29. Link '29'maybe moved longitudinallybymeans of alever 30 pivoted to the frame, a pedal bar 31 extending transverse thereof and providedat opposite ends with treads 32 and" 33. Upon depress a ing tread 32, link 29 is moved outwardly away'from thechair'an'd yoke 23 is forced downwardly, thereby; moving the friction wheel-21f downwardly and to-the left. De-

' 'pression ofitre'a'd" 33 moves the link 29 in the opposite direction, and friction wheel 21 upwardly a-nd to' the right. Yoke 22:.is'f

similarly constructed and has" a stem 34 connected by a bell-crank'lever to a link 35 shown in Fig. 5.. Link 35 is moved by a pedal bar 36 having treads 37 and 38.-

Depression of tread 37 will move friction wheel 21 downwardly and to the right, while depression of. tread38 will move friction wheel 21 upwardly and to the left. In order to avoid the motor being continuously in operation, and only to operate it when one of the'treads is depressed any convenient f type of switch connected in the motor icir-' cuit. may be operated by the pedal bars to Q throw the motor out. of the circuit when the pedal bars are. in neutral position and 75 The in circuit when any are moved from neutral position. This switch forms no part of my invention and is indicated conventionally Within the carriage casing and in contact with the periphery of the propelling wheel 11 are friction wheels 40 and l-l. These wheels are .in the same plane as friction wheel 21, so that upon depression of the latter t0 the left motion will be transmitted to friction wheel 4L0 and upon depressionrof the friction wheel 21 to the right, motion will be transmitted to friction wheel 41. Thus, the propelling wheel may be operated in either direction by depression of the proper pedal. In this manner the seat may be propelled about the chair in either direction by the operator pressing the proper tread with his feet. It is desirable that a brake be applied to the propelling wheel when the latter F or this purpose a 43 operated upon by a spring 44, see Fig.

3, By this construction, the brake shoe is held against the propelling wheel, unless the free end of arm 43 is depressed. It is necessary to' release the brake when the propelling wheelis operated, and as the latter isoperated only upondepression of friction wheel .21, a bar 44 is secured thereto and engaged by depression ,of shaft 20.

k The following means are'provided for turning the chair. Mounted on the standard are crown gears 45 and 46 spaced apart w th the teeth thereof faclng each other. Disposed for engagement with the crown gears is .a pinlon 47 mounted upon a shaft 48 having a universal joint. Shaft 48 extends into the carriage casing and has fixed thereon a 4D friction wheel49 disposed to be engaged by the friction wheel 21 when. the latter is raised to the left. A bell-crank lever 50 is connected to the shaft adjacent the pinion and operated by a link rod 51, which in turn is connected to a pedal bar 52 arranged to be moved in either direction. Pedal bar 52 has treads 53 and 54:. By depressing tread 38, the friction wheel 21 is thrown into en gagement with friction wheel49, thereby op erating shaft, 48., To turn the chair in one direction, tread Set is then depressed placing pinion 4? 1n engagement with crown gear 45. To turn the chair in the opposite direction tread 53 is depressed therebymoving rack and seat will be raised therewith. This is accomplished by depressing tread In order to maintam the seat in its upper position, a click and spring 59:is;disposed to engage the screw 55. in dog 60 operated by a pedal is disposed in position below click 59. The click locks the post 12in position and by depression of pedal 63 may be kicked out of engagement therewith so as to permit the seat to be lowered. The screw 55, click and pinion 56 permit the seat to be turned around as desired. 7 v

For the convenience of the operator a standard'61 is secured to the chairand' has adjustably secured thereto a table 62 for containing'the operators tools.

Although I have shown my invention as applied to a barbers chair, it is not limited to such use. The invention may be embodied in any'chair wherein a subject sits, and an operator works upon the subject.

What I claim is: r i

In a driving mechanism, the combination of a drive shaft mounted so as to be swung in every direction transverse thereto, crossed yokes in which said shaft is j ournaled, means to independently move said yokes and thereby move said shaft transversely, a driving wheel .on said shaft, driven wheels disposed to be engaged by said drivingwheel upon movement of said yokes.

In witness that I claim'the foregoing I have hereunto subscribed my name this 12th 

